Pneumatic ventilation butterfly valve - Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Pneumatic ventilation butterfly valve

  • [Valve model]: D641W
  • [Diameter specification]: DN50～DN2000
  • [Structure]: Medium line type (flange)
  • [Valve body material]: Cast steel WCB, stainless steel 304, stainless steel 316
  • [Nominal pressure]: PN2.5、PN6、PN10
  • [Applicable temperature]: -40 ℃~+450 ℃ above
  • [Application Scope]: Air, gas, dusty gas, flue gas, cold and hot air, etc
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  • Pneumatic ventilation butterfly valve

Product features

The pneumatic ventilation butterfly valve is a kind of non closed rotary butterfly valve used in the ventilation pipeline. It is designed and manufactured in the structural form of welding the central line type disc plate with the short structural steel plate as the flow regulation or switch control of the gas medium. The pneumatic ventilation butterfly valve has small flow resistance, large flow coefficient, light weight, fast opening and closing, and can be used together with the valve positioner to achieve proportional adjustment, especially suitable for the control of flue gas in large diameter and large flow boilers.
 
Advantages of pneumatic ventilation butterfly valve:
1. The valve can be remotely controlled to switch and adjust, which saves time, labor and labor costs.
2. There is no connecting rod, bolt, etc. inside, which is reliable and has a long service life. It can be installed in multiple stations without being affected by the flow direction of media.
3. It is designed and manufactured by using a new structural form of central line type disc plate welded with short structural steel plate. It is compact in structure, light in weight, easy to install, small in flow resistance, large in flow volume, and easy to operate to avoid the impact of high temperature expansion.
Standards for pneumatic ventilation butterfly valve:
 
Design standard: GB/T12238-1989, JB/T8692-1998
Flange connection size: GB/T9115.1-2000
Structure length: GB/T12221-1989
Pressure test: GB/T13927-1992, JB/T9092-1999
Strength test: 0.075 0.375 0.9
Sealing test: ≤ 1.5% leakage
Applicable temperature: - 40~+450 ℃
 
 Qd Structure diagram of ventilation butterfly valve

technical parameter

Nominal diameter DN50～DN2000(mm)
Pressure rating PN0.25、0.6、1.0MPa
Connection mode Flange connection
structural style Midline structure
Drive mode Pneumatic control, pneumatic drive (with handwheel)
body material Cast steel WCB, stainless steel 304, stainless steel 316
Sealing material Body seal
Workplace Air, gas, dusty gas, flue gas, cold and hot air, etc
control mode Switch type (switch two position mode), regulating type (regulating disc opening)
Accessories selection Positioner, solenoid valve, air filter pressure reducer, retaining valve, travel switch, valve position transmitter, handwheel mechanism, etc

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery method, and the fluctuation of the price of valve raw materials, the price of valves will have a big difference immediately, so our products have not been marked with prices on the website, please understand.

If you select a valve product on this website and need to know the price or obtain relevant technical information, please contact us. We will reply immediately, and can select appropriate valve products for you according to your requirements, so that your procurement process is easy and pleasant.

Quotation process:

1. Please fax the name (or product model) of the valve you selected, the required order quantity, packaging requirements, delivery time, your company name, your company location and contact information to 021-36311208 Or telephone: 021-60547555。

2. After receiving the customer's purchase list, our company will provide the customer with various services such as valve quotation "price list", model selection "valve model" and technical guidance as soon as possible.

3. Specific matters: delivery date, special requirements, etc.

Ordering Instructions

1、 If the customer has special requirements for the product, the following instructions must be provided in the order contract:
(1) Valve body material (such as plastic, cast steel, stainless steel...)
(2) Connection type (such as flange, thread, clamp, etc.)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Power supply voltage, air supply pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acid-base)
2、 The company configures various driving devices according to the special requirements of customers. (electric control, pneumatic control)
3、 If the customer provides the determined valve type and model, the customer should correctly explain the meaning and requirements of the model (see the description of valve model preparation for details), and sign the contract on the condition that both the supplier and the buyer have the same understanding.
4、 After the customer tells the required valve model, specification, quantity, delivery time and place, the deposit of 20% of the total amount or the full payment for goods shall be remitted to our company's account in time, and the rest of the payment for goods shall be remitted before shipment, so as to arrange shipment in time.
5、 After the purchase is confirmed, our company will produce in strict accordance with the delivery date. The product processing cycle is generally 3 to 30 days, depending on the type and quantity of the order, and the specific delivery time is subject to the contract. In order to ensure that the goods you ordered are in place in time, please try your best to order earlier.
6、 Our company provides network distribution services according to the needs of customers, delivering goods to the branches (offices) of customers in major cities, and implementing door-to-door delivery services. After the products are accepted, our company will provide after-sales service.